SECTION 4 – SEQUENCE OF OPERATION
4-1. Input/Output Signals
Robot Control
Unit To
Computer
Interface
Computer
Interface
To Robot
Control Unit
Robot interface receives input signals for contactor control, gas control, jog, welding volts, and wire speed. It also receives a signal to initiate a check to see if wire is stuck to workpiece at end of a weld.
Robot interface sends output sig- nals to robot control unit for current sense, wire stuck, and weld stand- by.
Wire Feed Speed
Output Volts
Peak Amps
Gas Control
Contactor Control
Jog Fwd.
Wire Stuck Check
Wire Contact
To Workpiece
Jog
Power On, Standby
Current Detect
Wire Stuck
≈ 60 MS
Burnback | ≈ 50 MS | Preflow | Postflow |
Time | Time | Time |